Pycnanthemum Michx.
Family: Lamiaceae
Pycnanthemum image
John M. Schoeneker  

Key to Wisconsin Pycnanthemum

Author: John G. Zaborsky

    • 1a. Stems pubescent on the sides and angles; leaves often over 7 mm wide P. verticillatum

    • 1b.Stems glabrous or pubescent only on the angles; leaves less than 7 mm wide (rarely wider) 2

    • 2a. Calyx lobes acuminate, often with a subulate tip, the outer faces of the tips puberulent; stems glabrous; leaves glabrous, the widest ones no more than 2 (–3) mm wide P. tenuifolium

    • 2b.Calyx lobes triangular, without subulate tips, the outer faces of the tips densely pubescent; stems pubescent along the angles with spreading and/or incurved hairs; leaves pubescent on the margins and abaxial veins, widest leaves 5 mm or more wide P. virginianum

Species within Green Lake County 2016